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Re:数据弱 判断是否有且只有一个根（入度为0），除了根每个点入度是否为1 就 AC了In Reply To:数据弱 判断是否有且只有一个根（入度为0），除了根每个点入度是否为1 就 AC了 Posted by:lqp18_31 at 2009-08-24 22:41:00 > rt大哥，我的咋不行 Followed by: Post your reply here: |
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